Question

A graphing calculator displays 1.89 x 10^12 as 1.89e12. How do you think it would display 1.89 x 10^-12? What does the e stand for?

Answer 1

`1.89* 10^(-12)=1.89e-12`

Explanation:

Given : A graphing calculator displays
`1.89* 10^(12)` as 1.89e12.

To find : How do you think it would display
`1.89* 10^(-12)`? What does the e stand for?

Solution :

In a graphing calculator 'e' stand for exponent of 10.

`1.89* 10^(12)=1.89e12`

In
`1.89* 10^(-12)` there is only negative sign difference.

So,
`1.89* 10^(-12)=1.89e-12`

Answer 2

What you need to know for this case is that the calculator is using the scientific notation in two different ways:

Way 1:

`a * 10 ^ b`

Way 2:

`aeb`

Where, in both cases:

a, b: they are real numbers.

Therefore, for the following number:

`1.89*10^(-12)`

We have an equivalent way is:

`1.89e-12`

Answer:

`1.89e-12`

The e refers to the exponent to which the base 10 is elevated.